发明名称 Power tong frames
摘要 Apparatus for securing a joint between two lengths of tubular. The apparatus comprises a tong arrangement (23) comprising a rotary tong (1) and a back-up tong (11). A frame (20) has a seat (21) for supporting the tong arrangement (23) from beneath, the tong arrangement (23) resting upon the seat (21) such that the tong arrangement (23) can be oriented in use at an angle to the longitudinal axis of the frame (20). Means (32) are provided for securing the tong arrangement (23) to the frame (20) at a chosen orientation.
申请公布号 US2004035573(A1) 申请公布日期 2004.02.26
申请号 US20030432059 申请日期 2003.05.15
申请人 PIETRAS BERND-GEORG 发明人 PIETRAS BERND-GEORG
分类号 E21B19/16;(IPC1-7):E21B19/18 主分类号 E21B19/16
代理机构 代理人
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